STANDARDPhysics-Magnetism
STANDARD Physics Magnetic Field due to Current MCQ Question
Type: MCQ-conceptual-Medium
A current loop, having two circular arcs joined by two radial lines is shown in the figure. It carries a current of 10 A. The magnetic field at point O will be close to
A
1.0 × 10⁻⁵ T
B
1.5 × 10⁻⁵ T
C
1.0 × 10⁻⁷ T
D
1.5 × 10⁻⁷ T
Correct Answer
Option A
Detailed Explanation
The magnetic field at the center of a circular arc is given by B = (μ₀I/4πr)(θ), where θ is the angle in radians. For the given configuration, the net magnetic field at O is the vector sum of the fields due to the arcs. Calculating these gives approximately 1.0 × 10⁻⁵ T.
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